User equipment timing misalignment reporting in non-terrestrial networks

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine timing misalignment information between an uplink timeline and a downlink timeline associated with a non-terrestrial cell. The UE may send the timing misalignment information to a satellite associated with the non-terrestrial cell. Many other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 706,060, filed on July 29, 2020, entitled “USER EQUIPMENT TIMINGMISALIGNMENT REPORTING IN NON-TERRESTRIAL NETWORKS,” and U.S. Non-Provisional Patent Application No. 17 / 303,801, filed on June 8, 2021, entitled “USER EQUIPMENT TIMING MISALIGNMENT REPORTING IN NON-TERRESTRIAL NETWORKS,” both of which are expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for user equipment (UE) timing misalignment reporting in non-terrestrial networks. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that are capable of supporting communications with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) that can support communications for multiple user equipments (UEs). A UE may communicate with a BS via a downlink and an uplink. A "downlink" (or "forward link") refers to a communication link from a BS to a UE, and an "uplink" (or "reverse link") refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional and even global levels. NR, also known as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR aims to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards, which use orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements in LTE, NR and other wireless access technologies remain very useful. Summary of the invention

[0007] In some aspects, a method of wireless communication performed by a user equipment (UE) includes determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline of the UE associated with a non-terrestrial cell, and transmitting the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0008] In some aspects, a wireless communication method performed by a UE includes: receiving an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and sending the uncompensated uplink signal to the satellite based at least in part on receiving the indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0009] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to determine timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and to send the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0010] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to receive an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell, and send the uncompensated uplink signal to the satellite based at least in part on receiving the indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0011] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to determine timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and transmit the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0012] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell, and send the uncompensated uplink signal to the satellite based at least in part on receiving the indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0013] In some aspects, an apparatus for wireless communication includes means for determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, and means for transmitting the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0014] In some aspects, an apparatus for wireless communication includes: components for receiving an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and components for sending the uncompensated uplink signal to the satellite based at least in part on receiving the indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0015] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and illustrated by the accompanying drawings and description.

[0016] The foregoing has been fairly broadly outlined according to the features and technical advantages of the examples of the present disclosure, so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as the basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and methods of operation) and the associated advantages will be better understood according to the description below. Each of the accompanying drawings is provided for the purpose of illustration and description, and is not intended to be a definition of limitations to the claims.

[0017] Although various aspects are described in the present disclosure by describing some examples, it will be understood by those skilled in the art that these aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip embodiments or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing equipment, medical devices, or devices supporting artificial intelligence). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. The device incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include multiple components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or adders). The aspects described herein are intended to be implemented in devices, components, systems, distributed arrangements, or end-user devices of various sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to be able to understand the above features of the present disclosure in detail, a more specific description briefly summarized above can be obtained by reference to multiple aspects, some of which are shown in the accompanying drawings. However, it should be noted that the drawings only show certain typical aspects of the present disclosure and should not be considered as limiting the scope thereof, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram showing an example of a frame structure in a wireless communication network according to the present disclosure.

[0022] Figure 4 is a diagram illustrating an example of a regenerative satellite deployment and an example of a transparent satellite deployment in a non-terrestrial network.

[0023] Figure 5 is a diagram illustrating an example of timing alignment in a non-terrestrial network according to the present disclosure.

[0024] Figure 6 and Figure 7 is a diagram illustrating an example associated with UE timing misalignment reporting in a non-terrestrial network according to the present disclosure.

[0025] Figure 8 and Fig. 9 is a diagram illustrating example procedures associated with UE timing misalignment reporting in a non-terrestrial network according to the present disclosure.

[0026] Fig.10 is a block diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0027] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings of this article, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is independent of any aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which is practiced using other structures, functions, or structures and functions other than or in addition to the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0028] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. The implementation of these elements as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0029] It should be noted that although terms generally associated with 5G or NR radio access technologies (RATs) may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0030] Figure 1 is a diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network, an LTE network, etc. The wireless network 100 may include a plurality of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE), and may also be referred to as an NR BS, a Node B, a gNB, a 5G Node B (NB), an access point, a transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem, a base station subsystem serving the coverage area, depending on the context in which the term is used.

[0031] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. One BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0032] In some aspects, the cell is not necessarily fixed, and the geographic area of ​​the cell can move according to the location of the mobile BS. In some aspects, the BSs can be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections or virtual networks, similar interfaces using any suitable transport network).

[0033] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or UE) and can send transmissions of data to a downstream station (e.g., a UE or BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the illustrated example, a relay BS 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay BS may also be referred to as a relay station, a relay base station, a relay, or the like.

[0034] The wireless network 100 may be a heterogeneous network including different types of BSs, such as a macro BS, a pico BS, a femto BS, a relay BS, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a higher transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0035] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for the BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0036] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a portable computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smart book, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device or satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0037] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to a network (e.g., a wide area network such as the Internet or a cellular network) or a connection to a network, for example, via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be contained within a housing that houses components of UE 120 (e.g., processor components and / or memory components). In some aspects, processor components and memory components may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0038] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0039] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol or vehicle-to-infrastructure (V2I) protocol) and / or mesh network. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0040] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating frequency band having a first frequency range (FR1) from 410 MHz to 7.125 GHz, and / or can communicate using an operating frequency band having a second frequency range (FR2) from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is often referred to as a "millimeter wave" band. Therefore, unless otherwise stated, it should be understood that the term "sub-6 GHz" and the like (if used herein) can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise stated, it should be understood that the term "millimeter wave" and the like (if used herein) can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0041] In some aspects, the wireless network 100 may include one or more non-terrestrial network (NTN) deployments, wherein non-terrestrial wireless communication devices may include BSs 110f (interchangeably referred to herein as "non-terrestrial BSs," "non-terrestrial base stations," "satellite base stations," or "satellites"), relay stations (interchangeably referred to herein as "non-terrestrial relay stations" or "satellite relay stations"), and the like. As used herein, "NTN" may refer to a network to which access is facilitated by non-terrestrial BSs 110f, non-terrestrial relay stations, and the like. A satellite may provide a non-terrestrial cell, which may at least partially overlap with one or more cells provided by a ground-based BS, may contain one or more cells provided by a ground-based BS, and the like. In some aspects, a satellite may be associated with a non-terrestrial BS (e.g., the BS may be mounted on a satellite). In some aspects, a satellite may be associated with a terrestrial or ground-based BS.

[0042] The wireless network 100 may include any number of non-terrestrial wireless communication devices. The non-terrestrial wireless communication devices may include satellites, high altitude platforms (HAPs), etc. The HAPs may include balloons, spacecraft, airplanes, unmanned aerial vehicles, etc. The non-terrestrial wireless communication devices may be part of an NTN that is separate from the wireless network 100. Alternatively, the NTN may be part of the wireless network 100. The satellite may communicate directly and / or indirectly with other entities in the wireless network 100 using satellite communications. The other entities may include UEs, other satellites in one or more NTN deployments, other types of BSs (e.g., fixed or ground-based BSs), relay stations, one or more components and / or devices included in the core network of the wireless network 100, etc.

[0043] As mentioned above, providing Figure 1 As an example. Other examples may be different from combining Figure 1 The content described.

[0044] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0045] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) data for the UE based at least in part on the (multiple) MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively.

[0046] At the UE 120, antennas 252a to 252r may receive downlink signals from the base station 110 and / or other base stations, and may provide received signals to (multiple) demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may also process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indicator (CQI) parameter, etc. In some aspects, one or more components of the UE 120 may be included in the housing 284 .

[0047] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0048] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included in one or more antenna panels, antenna groups, antenna element groups, and / or antenna arrays, etc. An antenna panel, an antenna group, a group of antenna elements, and / or an antenna array may include one or more antenna elements. An antenna panel, an antenna group, a group of antenna elements, and / or an antenna array may include a group of coplanar antenna elements and / or a group of non-coplanar antenna elements. An antenna panel, an antenna group, a group of antenna elements, and / or an antenna array may include antenna elements within a single housing and / or antenna elements within multiple housings. An antenna panel, an antenna group, a group of antenna elements, and / or an antenna array may include one or more antenna elements coupled to one or more transmit and / or receive components (such as one or more components of 2).

[0049] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. A processor (e.g., controller / processor 280) and memory 282 may use the transceiver to perform aspects of any of the methods described herein (e.g., as described in reference to Figure 6-9 described).

[0050] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. A processor (e.g., controller / processor 240) and memory 242 may use the transceiver to perform aspects of any of the methods described herein (e.g., as described in reference to Figure 6-9 described).

[0051] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of the base station 110 may perform one or more techniques associated with UE timing misalignment reporting in a non-terrestrial network, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) of may perform or direct the following operations, such as Figure 8 The process of 800 Fig. 9 900 and / or other processes described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, conversion, and / or interpretation), may cause one or more processors, UE 120, and / or base station 110 to perform or direct, for example, Figure 8 The process of 800 Fig. 9 The process 900 and / or other processes described herein may include operations. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0052] In some aspects, the UE 120 may include components for determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell, components for sending the timing misalignment information to a satellite 110f associated with the non-terrestrial cell, etc. In some aspects, such components may include in conjunction with Figure 2 One or more components of the UE 120 are depicted, such as the controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0053] Although Figure 2 The blocks in the 200 and 210 are shown as distinct components, but the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO 266 may be performed by the processor 280 or under the control of the controller / processor 280.

[0054] As mentioned above, providing Figure 2 As an example. Other examples may be different from combining Figure 2 The content described.

[0055] Figure 3 is a diagram illustrating an example 300 of a frame structure in a wireless communication network according to the present disclosure. Figure 3 The frame structure shown is used for frequency division duplex (FDD) in telecommunication systems (such as LTE, NR, etc.). The transmission timeline of each of the downlink and uplink may be divided into radio frame units (sometimes referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into a set of Z (Z ≥ 1) subframes (e.g., with indices from 0 to Z-1). Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of time slots (e.g., Figure 3 2m time slots per subframe are shown in FIG, where m is an index of a basic numerology for transmission, such as 0, 1, 2, 3, 4, etc.). Each time slot may include a set of L symbol periods. For example, each time slot may include fourteen symbol periods (e.g., Figure 3 In some aspects, the scheduling unit for FDD can be frame-based, subframe-based, slot-based, mini-slot-based, symbol-based, etc.

[0056] As mentioned above, providing Figure 3 As an example. Other examples may differ from Figure 3 as described.

[0057] Figure 4 is a diagram illustrating an example 400 of a regenerative satellite deployment and an example 410 of a transparent satellite deployment in a non-terrestrial network according to the present disclosure.

[0058] Example 400 illustrates a regenerative satellite deployment. In example 400, UE 120 is served by satellite 420 via service link 430. For example, satellite 420 may include satellite 110f. In some aspects, satellite 420 may be referred to as a non-terrestrial base station, a regenerative repeater, an onboard processing repeater, etc. In some aspects, satellite 420 may demodulate uplink radio frequency signals and may modulate baseband signals derived from uplink radio signals to produce downlink radio frequency transmissions. Satellite 420 may send downlink radio frequency signals on service link 430. Satellite 420 may provide a cell covering UE 120.

[0059] Example 410 shows a transparent satellite deployment, which may also be referred to as a bent-pipe satellite deployment. In example 410, UE 120 is served by satellite 440 via service link 430. Satellite 440 may be a transparent satellite. Satellite 440 may relay signals received from gateway 450 (e.g., ground-based BS 110) via feeder link 460. For example, a satellite may receive uplink radio frequency transmissions and may send downlink radio frequency transmissions without demodulating uplink radio frequency transmissions. In some aspects, a satellite may convert the uplink radio frequency transmission frequency received on service link 430 to the frequency of the uplink radio frequency transmission on feeder link 460, and may amplify and / or filter the uplink radio frequency transmission. In some aspects, the UE 120 shown in examples 400 and 410 may be associated with a global navigation satellite system (GNSS) capability, a global positioning system (GPS) capability, etc., although not all UEs have such capabilities. Satellite 440 may provide a cell covering UE 120.

[0060] Serving link 430 may include a link between satellite 440 and UE 120, and may include one or more of an uplink or a downlink. Feeder link 460 may include a link between satellite 440 and gateway 450, and may include one or more of an uplink (e.g., from UE 120 to gateway 450) or a downlink (e.g., from gateway 450 to UE 120). The uplink of serving link 430 may be represented by reference numeral 430-U, and the downlink of serving link 430 may be represented by reference numeral 430-D. Similarly, the uplink of feeder link 460 may be represented by reference numeral 460-U ( Figure 4 ), the downlink of the feeder link 460 may be represented by reference numeral 460-D ( Figure 4 not shown).

[0061] Due to the movement of satellites 420 and 440 and the potential movement of UE 120, feeder link 460 and service link 430 may each experience Doppler effects. These Doppler effects may be much larger than in terrestrial networks. The Doppler effect on feeder link 460 can be compensated to a certain extent, but may still be associated with a certain amount of uncompensated frequency error. In addition, gateway 450 may be associated with residual frequency error, and / or satellite 420 / 440 may be associated with airborne frequency error. These frequency error sources may cause the downlink frequency received at UE 120 to deviate from the target downlink frequency.

[0062] As mentioned above, providing Figure 4 As an example. Other examples may be different from combining Figure 4 The content described.

[0063] Figure 5 is a diagram illustrating an example 500 of timing alignment in a non-terrestrial network according to the present disclosure. Figure 5 As shown, satellite 110 may be time-aligned with one or more UEs 120 (eg, UE 120 - 1 , UE 120 - 2 , etc.) served in a non-terrestrial cell of satellite 110 .

[0064] like Figure 5 As further shown in , satellite 110 may be associated with an uplink timeline 512 that includes a plurality of time domain resources (e.g., time slots or subframes 0-16) for uplink communications in a non-terrestrial cell, and may be associated with a downlink timeline 514 that includes a plurality of time domain resources (e.g., time slots or subframes 0-16) for downlink communications in a non-terrestrial cell. From the perspective of satellite 110, uplink timeline 512 and downlink timeline 514 may be timing aligned (e.g., time slot or subframe 0 of uplink timeline 512 is timing aligned with time slot or subframe 0 of downlink timeline 514, etc.).

[0065] Due to the distance between UE 120-1 and satellite BS 110, and the distance between UE 120-2 and satellite 110, propagation delays may occur for communications between UE 120-1 and satellite 110, and for communications between UE 120-2 and satellite 110. As a result, from the perspective of UE 120-1, uplink timeline 522 and downlink timeline 524 of UE 120-1 are misaligned. UE 120-1 may determine a timing misalignment 526 between uplink timeline 522 and downlink timeline 524. Timing misalignment 526 may include an offset of N time slots or subframes (or another number of time domain resources, or another time duration, etc.) between time slot or subframe 0 of uplink timeline 522 and time slot or subframe 0 of downlink timeline 524. Specifically, uplink timeline 522 may be shifted or adjusted N time slots or subframes earlier in time so that UE 120-1 starts uplink transmission 528 earlier to compensate for the propagation delay between UE 120-1 and satellite 110. If UE 120-1 is a half-duplex UE (or another type of UE that is not capable of performing simultaneous transmission and reception), the time slot or subframe used for uplink transmission 528 may not be available for downlink reception by UE 120-1. In addition, time slots, subframes, or other time domain resources on both sides of the time slot or subframe used for uplink transmission 528 may not be available to provide a guard period for UE 120-1 to switch between transmission and reception.

[0066] like Figure 51, UE 120-2 may be located closer to satellite 110 than UE 120-1. Therefore, because the propagation delay is smaller, the adjustment between the uplink timeline 532 and the downlink timeline 534 of UE 120-2 may be relatively smaller than the adjustment of UE 120-1. In these cases, UE 120-2 may determine the timing misalignment 536 for compensating for the propagation delay to include ND time slots or subframes, where D is based at least in part on the distance between UE 120-2 and satellite 110. Specifically, uplink timeline 532 may be shifted or adjusted in time by N minus D (i.e., (ND)) time slots or subframes earlier, so that UE 120-2 starts uplink transmission 538 earlier to compensate for the propagation delay between UE 120-2 and satellite 110. In some cases, for a particular value of D (eg, where D=5), the same uplink subframe / timeslot index (N) may result in different unavailable downlink subframe / timeslot indices at UEs 120-1 and 120-2.

[0067] As mentioned above, providing Figure 5 As an example. Other examples may be different from combining Figure 5 The content described.

[0068] As described above, a UE in a non-terrestrial network may determine a timing misalignment between an uplink timeline and a downlink timeline of the UE associated with a satellite. However, the satellite may not know the timing misalignment (e.g., because at least some components of the misalignment are estimated by the UE, for example, based on its geographic location information, or satellite ephemeris information, or any combination thereof), which may cause the satellite scheduling to overlap with the uplink and downlink communications of the UE. In the case where the UE cannot handle (or cannot handle) simultaneous transmissions (such as, if the UE is a half-duplex UE), these overlapping communications may be referred to as conflicts (e.g., conflicts between the uplink transmission of the UE and the downlink reception of the UE). These conflicts may cause one or more downlink communications to be discarded or unreceivable at the UE, may cause delays in uplink communications sent to the satellite, may increase retransmissions between the UE and the satellite, and the like.

[0069] Some aspects described herein provide techniques and apparatus for UE timing misalignment reporting in non-terrestrial networks. In some aspects, a UE (e.g., UE 120) may determine timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline of a non-terrestrial cell associated with a satellite (e.g., satellite 110, satellite 420, etc.). The UE may send timing misalignment information to the satellite, which enables the satellite to schedule and / or configure communications between the UE and the satellite accordingly. In this way, the satellite may schedule and / or configure communications between the UE and the satellite in a manner that reduces and / or prevents conflicts between uplink transmissions and downlink receptions of the UE. This may reduce the number of downlink communications that are discarded or unreceivable at the UE, may reduce delays in uplink communications sent to the satellite, may reduce retransmissions between the UE and the satellite, and so on. The techniques and apparatus described herein may be used for NB-IoT communications, enhanced mobile broadband (eMBB) communications, and / or other types of communications.

[0070] Figure 6 6 is a diagram illustrating an example 600 associated with UE timing misalignment reporting in a non-terrestrial network according to the present disclosure. Figure 6 As shown, example 600 may include communications between a UE 120 and a satellite 110 (e.g., satellite 420). In some aspects, the UE 120 and the satellite 110 may be included in a wireless network, such as wireless network 100. In some aspects, the UE 120 and the satellite 110 may communicate over a wireless access link or service link 430, which may include an uplink 430-U and a downlink 430-D.

[0071] In some aspects, UE 120 may be served by a non-terrestrial cell associated with and / or provided by satellite 110. In some aspects, UE 120 and BS 110 may communicate based at least in part on uplink timelines (e.g., uplink timeline 512, uplink timeline 522, uplink timeline 532, etc.) and downlink timelines (e.g., downlink timeline 514, downlink timeline 524, downlink timeline 534, etc.).

[0072] like Figure 6 As shown, by reference numeral 602, UE 120 may (eg, using receive processor 258, transmit processor 264, controller / processor 280, memory 282, Fig.10The UE 120 may determine the timing misalignment information between the uplink timeline and the downlink timeline of the non-terrestrial cell (e.g., timing misalignment 526, timing misalignment 536, etc.) by determining component 1008 (described below), etc. In some aspects, the UE 120 may determine the timing misalignment information based at least in part on the geographic location of the UE 120. The UE 120 may determine the geographic location based at least in part on triangulation techniques, based at least in part on GPS or GNSS satellite positioning information, etc.

[0073] The timing misalignment information may include various types of information associated with the timing misalignment. For example, the timing misalignment information may include an indication of a geographic location of UE 120. As another example, the timing misalignment information may include an indication of a timing misalignment. As described above, the timing misalignment determined by UE 120 may be a relatively large timing misalignment that is larger than a timing advance detected by satellite 110 and transmitted to UE 120 as part of a random access procedure.

[0074] For non-terrestrial cells associated with satellite 110, the timing misalignment may be represented as an offset between an uplink timeline and a downlink timeline. In some aspects, UE 120 may explicitly indicate the actual estimated or determined magnitude of the offset. For example, UE 120 may explicitly indicate the estimated or determined magnitude of the offset as an amount of time between the uplink timeline and the downlink timeline (e.g., in milliseconds, seconds, etc.), a number of one or more types of time domain resources between the uplink timeline and the downlink timeline (e.g., a number of time slots, a number of subframes, a number of radio frames, etc., between the uplink timeline and the downlink timeline), etc.

[0075] In some aspects, UE 120 may indicate a range that includes an offset. For example, UE 120 may indicate a range of durations from a plurality of ranges of durations (e.g., a range of durations that increase by a particular amount of time) that includes the duration of the offset. As another example, UE 120 may indicate a range of time domain resources from a plurality of ranges of time domain resources (e.g., a range of a number of time slots, a range of a number of subframes, etc.) that includes the number of time domain resources of the offset.

[0076] like Figure 6 As further shown in FIG. 6 , by reference numeral 604, UE 120 may (eg, using antenna 252, transmit processor 264, TX MIMO processor 266, MOD 254, controller / processor 280, memory 282, Fig.10The UE 120 may transmit the timing misalignment information in one or more types of uplink communications, such as uplink control information (UCI) communications, media access control control element (MAC-CE) communications, radio resource control (RRC) communications, or another type of uplink communication.

[0077] UE 120 may send timing alignment information at different times and based at least in part on different triggers or events. For example, UE 120 may send timing alignment information based at least in part on receiving a signal from satellite 110 (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, Fig.10 The timing alignment information is sent by receiving an indication of sending timing misalignment information (e.g., a receiving component 1002 of the embodiment of the present invention) to send the timing alignment information. The indication can be included in a downlink control information (DCI) communication, a MAC-CE communication, an RRC communication, a physical downlink control channel (PDCCH) communication, or another type of downlink communication.

[0078] As another example, UE 120 may send the timing misalignment information in a periodic or semi-persistent uplink grant (e.g., received from satellite 110). In these cases, UE 120 may send the timing misalignment information in uplink resources (e.g., time slots, symbols, subframes, resource blocks, subcarriers, etc.) scheduled, allocated, and / or configured for UE 120 in the periodic or semi-persistent uplink grant.

[0079] As another example, UE 120 may send timing misalignment information based at least in part on detecting, determining, and / or identifying an event. The event may include, for example, an event defined or identified in a wireless communication standard or wireless communication specification, an event contained in a table or another type of data structure, an event associated with an amount of change between a recent timing misalignment and a previously determined timing misalignment (e.g., an event associated with determining that the amount of change satisfies a threshold amount of change), and / or other types of events.

[0080] In some aspects, a conflict may occur at the UE 120 between sending the timing misalignment information to the satellite 110 and receiving the downlink transmission from the satellite 110. For example, because the satellite 110 is unaware of the timing misalignment between the uplink timeline and the downlink timeline of the UE 120, a conflict may occur, which may cause the satellite 110 to schedule or configure overlapping transmissions. The UE 120 may determine the timing misalignment based at least in part on (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, Fig.10The UE 120 may identify a conflict based at least in part on determining an overlap between one or more time domain resources (e.g., symbols, time slots, subframes, etc.) in which the timing misalignment information is to be sent and one or more time domain resources in which the downlink transmission is to be received. In some aspects, the UE 120 may identify a conflict based at least in part on determining an overlap between one or more time domain resources in which the timing misalignment information is to be sent and one or more guard periods or return time domain resources on either side of the one or more time domain resources in which the downlink transmission is to be received. In some aspects, the UE 120 may identify a conflict based at least in part on determining an overlap between one or more time domain resources in which the downlink transmission is to be received and one or more guard periods or return time domain resources on either side of the one or more time domain resources in which the timing misalignment information is to be sent.

[0081] In these cases, the UE 120 may determine (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008, etc.) a priority associated with the downlink transmission (e.g., a transmission priority, a quality of service (QoS) priority, a physical channel priority, and / or another type of priority), a priority associated with the uplink transmission in which the timing misalignment information is to be sent, and may determine to send the timing misalignment information based at least in part on the priority associated with the uplink transmission being greater than the priority associated with the downlink transmission.

[0082] In some aspects, UE 120 may continue to periodically and / or aperiodically determine and send timing misalignment information to satellite 110 (e.g., based at least in part on another event or trigger). For example, UE 120 may send updated timing misalignment information associated with the updated timing misalignment at particular time intervals based at least in part on detecting a threshold amount of change between the timing misalignment and the updated timing misalignment, etc.

[0083] In this manner, UE 120 may determine timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline of a non-terrestrial cell associated with satellite 110. UE 120 may send the timing misalignment information to satellite 110, which enables satellite 110 to schedule and / or configure communications between UE 120 and satellite 110 accordingly. In this manner, satellite 110 may schedule and / or configure communications between UE 120 and satellite 110 in a manner that reduces and / or prevents conflicts between uplink transmissions and downlink receptions of UE 120. This may reduce the number of downlink communications that are dropped or unreceivable at UE 120, may reduce delays in uplink communications sent to satellite 110, may reduce retransmissions between UE 120 and satellite 110, and the like.

[0084] As mentioned above, providing Figure 6 As an example. Other examples may be different from combining Figure 6 The content described.

[0085] Figure 7 is a diagram illustrating an example 700 associated with UE timing misalignment reporting in a non-terrestrial network according to the present disclosure. Figure 7 As shown, example 700 may include communications between a UE 120 and a satellite 110 (e.g., satellite 420). In some aspects, the UE 120 and the satellite 110 may be included in a wireless network, such as wireless network 100. In some aspects, the UE 120 and the satellite 110 may communicate over a wireless access link or service link 430, which may include an uplink 430-U and a downlink 430-D.

[0086] In some aspects, UE 120 may be served by a non-terrestrial cell associated with and / or provided by satellite 110. In some aspects, UE 120 and BS 110 may communicate based at least in part on uplink timelines (e.g., uplink timeline 512, uplink timeline 522, uplink timeline 532, etc.) and downlink timelines (e.g., downlink timeline 514, downlink timeline 524, downlink timeline 534, etc.).

[0087] like Figure 7 , by reference numeral 702, the UE 120 may receive (e.g., using the antenna 252, the DEMOD 254, the MIMO monitor 256, the receive processor 258, the controller / processor 280, the memory 282, the receive component 1002, etc.) an indication to send an uncompensated uplink signal to the satellite 110. In some aspects, the UE 120 may receive the indication in a downlink communication from the satellite 110, such as a DCI communication, a MAC-CE communication, an RRC communication, a PDCCH communication, and / or another type of downlink communication. The uncompensated uplink signal may be an uplink signal to be sent by the UE 120 without adjustment based at least in part on a timing misalignment between an uplink timeline and a downlink timeline of a non-terrestrial cell associated with the satellite 110 (e.g., determined by the UE 120).

[0088] like Figure 7As further shown in FIG. 1 , by reference numeral 704, the UE 120 may transmit an uncompensated uplink signal to the satellite 110 based at least in part on receiving the indication (e.g., using the antenna 252, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the controller / processor 280, the memory 282, the transmit component 1004, etc.). In some aspects, the UE 120 may transmit the uncompensated uplink signal as part of a random access channel (RACH) procedure or an initial access procedure. For example, the UE 120 may transmit a RACH preamble transmission on a physical random access channel (PRACH) during the RACH procedure.

[0089] In this manner, satellite 110 may receive an uncompensated uplink signal, may measure the uncompensated uplink signal to determine a timing misalignment for UE 120, and may schedule communications with UE 120 based at least in part on the timing misalignment.

[0090] As mentioned above, providing Figure 7 As an example. Other examples may be different from combining Figure 7 The content described.

[0091] Figure 8 8 is a diagram illustrating an example process 800 performed, for example, by a UE in accordance with the present disclosure. Example process 800 is an example of a UE (eg, UE 120) performing operations associated with UE timing misalignment reporting in a non-terrestrial network.

[0092] like Figure 8 As shown, in some aspects, process 800 may include determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell (block 810). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, determining component 1008, etc.) may determine timing misalignment information between an uplink timeline and a downlink timeline associated with a non-terrestrial cell.

[0093] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include sending timing misalignment information to a satellite associated with a non-terrestrial cell (block 820). For example, as described above, the UE (e.g., using antenna 252, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, memory 282, transmit component 1004, etc.) may send timing misalignment information to a satellite associated with a non-terrestrial cell.

[0094] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0095] In a first aspect, the timing misalignment information comprises at least one of an indication of the timing misalignment or an indication of a geographic location of the UE. In a second aspect, either alone or in combination with the first aspect, the timing misalignment information comprises an indication of the timing misalignment, and the indication of the timing misalignment information comprises an indication of an offset between an uplink timeline and a downlink timeline. In a third aspect, either alone or in combination with one or more of the first and second aspects, the offset is indicated as at least one of a number of time slots between the uplink timeline and the downlink timeline, a number of subframes between the uplink timeline and the downlink timeline, a number of radio frames between the uplink timeline and the downlink timeline, or an amount of time between the uplink timeline and the downlink timeline.

[0096] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, an indication of an offset is provided from a plurality of candidate offsets configured for the UE. In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, process 800 includes determining (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, determination component 1008, etc.) a measured offset and selecting a candidate offset from the plurality of candidate offsets that is closest to the measured offset as the offset of the timing misalignment. In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the offset is indicated as a duration range from a plurality of duration ranges or a time domain resource range from a plurality of time domain resource ranges.

[0097] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 800 includes identifying (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) a conflict between a transmission of an uplink transmission including timing misalignment information and a reception of a downlink transmission, and determining (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, determination component 1008, and / or the like) to send the timing misalignment information based at least in part on a priority associated with the uplink transmission being greater than a priority associated with the downlink transmission.

[0098] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, sending the timing misalignment information comprises (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.) sending the timing misalignment information in at least one of the UCI communication, the MAC-CE communication, or the RRC communication. In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the process 800 comprises (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, the determining component 1008, etc.) determining updated timing misalignment information between an uplink timeline and a downlink timeline associated with a satellite, and (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.) sending the updated timing misalignment information to the satellite.

[0099] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, sending the timing misalignment information includes (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.) sending the timing misalignment information based at least in part on receiving an indication to send the timing misalignment information in at least one of a DCI communication, a MAC-CE communication, or an RRC communication. In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, sending the timing misalignment information includes (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmitting component 1004, etc.) sending the timing misalignment information on a periodic or semi-persistent uplink grant.

[0100] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, sending the timing misalignment information includes (e.g., using the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the memory 282, the transmit component 1004, etc.) sending the timing misalignment information based at least in part on an event, wherein the event includes at least one of an event defined by a specification or an amount of change between the timing misalignment information and the previous timing misalignment information satisfies a threshold. In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the UE and the satellite communicate using NB-IoT communication and / or eMBB communication.

[0101] although Figure 8Example blocks of process 800 are shown, but in some aspects process 800 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 8 Additionally or alternatively, two or more blocks of process 800 may be executed in parallel.

[0102] Fig. 9 is a diagram illustrating an example process 900 performed, for example, by a UE in accordance with the present disclosure. Example process 900 is an example of a UE (eg, UE 120) performing operations associated with UE timing misalignment reporting in a non-terrestrial network.

[0103] like Fig. 9 As shown in , in some aspects, process 900 may include receiving an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell (block 910). For example, as described above, the UE (e.g., using antenna 252, DEMOD 254, TX MIMO processor 256, receive processing 258, controller / processor 280, memory 282, receiving component 1002, etc.) may receive an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell.

[0104] like Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include transmitting an uncompensated uplink signal to the satellite based at least in part on receiving the indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell (block 920). For example, as described above, the UE (e.g., using transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, controller / processor 280, memory 282, transmit component 1004, etc.) may transmit an uncompensated uplink signal to the satellite associated with the non-terrestrial cell based at least in part on receiving the indication. In some aspects, the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0105] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0106] In a first aspect, receiving the indication includes receiving the indication in a PDCCH communication (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, receive component 1002, etc.). In a second aspect, alone or in combination with the first aspect, sending an uncompensated uplink signal includes sending an uncompensated uplink signal as part of a random access channel (RACH) process (e.g., using controller / processor 280, transmit processor 264, TXMIMO processor 266, MOD 254, antenna 252, memory 282, transmit component 1004, etc.). In a third aspect, alone or in combination with one or more of the first and second aspects, the uncompensated uplink signal includes a random access channel preamble transmission on a PRACH. In a fourth aspect, alone or in combination with one or more of the first to third aspects, the UE and the satellite communicate using NB-IoT communication and / or eMBB communication.

[0107] although Fig. 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include additional blocks, fewer blocks, different blocks, or different Fig. 9 Additionally or alternatively, two or more blocks of process 900 may be executed in parallel.

[0108] Fig.10 1 is a block diagram of an example apparatus 1000 for wireless communication. Apparatus 1000 may be a UE (e.g., UE 120), or a UE may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (e.g., UE 120, base station 110, satellite 110, satellite 420, or another wireless communication device) using receiving component 1002 and transmitting component 1004. As further shown, apparatus 1000 may include a determining component 1008.

[0109] In some aspects, the apparatus 1000 may be configured to perform Figure 6 and / or Figure 7 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 The process of 800 Fig. 9 In some aspects, Fig.10 The apparatus 1000 and / or one or more components shown in the figure may include the above combined Figure 2Additionally or alternatively, Fig.10 One or more of the components shown in the above may be combined Figure 2 Additionally or alternatively, one or more components of the set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0110] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the apparatus 1006. The receiving component 1002 may provide the received communications to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may perform signal processing (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the apparatus 1006. In some aspects, the receiving component 1002 may include the above in combination with Figure 2 One or more antennas 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, or a combination thereof, of the depicted UE 120.

[0111] Transmit component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to apparatus 1006. In some aspects, one or more other components of apparatus 1006 may generate communications and may provide the generated communications to transmit component 1004 for transmission to apparatus 1006. In some aspects, transmit component 1004 may perform signal processing (e.g., filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to apparatus 1006. In some aspects, transmit component 1004 may include the above in combination with Figure 2 One or more antennas 252, MOD 254, transmit processor 264, TX MIMO processor 266, controller / processor 280, memory 282, or a combination thereof, of the depicted UE 120. In some aspects, transmit component 1004 can be co-located with receive component 1002 in a transceiver.

[0112] In some aspects, determining component 1008 determines timing misalignment information between an uplink timeline and a downlink timeline associated with the non-terrestrial cell. In some aspects, transmitting component 1004 may transmit the timing misalignment information to an apparatus 1006 associated with the non-terrestrial cell. In some aspects, receiving component 1002 may receive an indication to transmit an uncompensated uplink signal to an apparatus 1006 associated with the non-terrestrial cell. In some aspects, transmitting component 1004 may transmit the uncompensated uplink signal to the apparatus 1006 based at least in part on receiving the indication.

[0113] The determining component 1008 may include a memory. In some aspects, the determining component 1008 may include the above combined Figure 2 The receive processor 258, transmit processor 264, controller / processor 280, memory 282, or a combination thereof of the described UE 120. The determining component 1008 may include one or more instructions that, when executed by one or more processors of the UE, cause the UE to determine timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell. The determining component 1008 may include means for determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell.

[0114] Fig.10 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be more than Fig.10 More components, fewer components, different components, or differently arranged components are shown. In addition, Fig.10 Two or more components shown may be implemented in a single component, or Fig.10 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The illustrated set (one or more) of components may perform the operations described as being performed by Fig.10 Another group of components shown performs one or more functions.

[0115] The following provides an overview of various aspects of the present disclosure:

[0116] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: determining timing misalignment information of a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; and sending the timing misalignment information to a satellite associated with the non-terrestrial cell.

[0117] Aspect 2: The method according to aspect 1, wherein the timing misalignment information comprises at least one of an indication of the timing misalignment or an indication of the geographic location of the UE. Aspect 3: The method according to aspect 1 or 2, wherein the timing misalignment information comprises an indication of the timing misalignment, and wherein the indication of the timing misalignment information comprises an indication of an offset between an uplink timeline and a downlink timeline.

[0118] Aspect 4: The method according to aspect 3, wherein the offset is indicated as at least one of the number of time slots between the uplink timeline and the downlink timeline, the number of subframes between the uplink timeline and the downlink timeline, the number of radio frames between the uplink timeline and the downlink timeline, or the amount of time between the uplink timeline and the downlink timeline. Aspect 5: The method according to aspect 3 or 4, wherein the indication of the offset is provided from a plurality of candidate offsets configured for the UE.

[0119] Aspect 6: The method according to aspect 5 further comprises: determining a measured offset; and selecting a candidate offset among a plurality of candidate offsets that is closest to the measured offset as the offset of the timing misalignment.

[0120] Aspect 7: The method according to aspect 5, wherein the offset is indicated as a duration range from a plurality of duration ranges or a time domain resource range from a plurality of time domain resource ranges. Aspect 8: The method according to any one of aspects 1-7, further comprising: identifying a conflict between the transmission of an uplink transmission including timing misalignment information and the reception of a downlink transmission; and determining to send the timing misalignment information based at least in part on the priority associated with the uplink transmission being greater than the priority associated with the downlink transmission.

[0121] Aspect 9: The method according to any one of aspects 1-8, wherein sending the timing misalignment information comprises: sending the timing misalignment information in at least one of uplink control information (UCI) communication, media access control control element (MAC-CE) communication, or radio resource control (RRC) communication. Aspect 10: The method according to any one of aspects 1-9, further comprising: determining updated timing misalignment information of an updated timing misalignment between an uplink timeline and a downlink timeline associated with the satellite; and sending the updated timing misalignment information to the satellite.

[0122] Aspect 11: The method according to any one of aspects 1-10, wherein sending the timing misalignment information comprises: sending the timing misalignment information based at least in part on receiving an indication to send the timing misalignment information in at least one of a downlink control information (DCI) communication, a media access control control element (MAC-CE) communication, or a radio resource control (RRC) communication. Aspect 12: The method according to any one of aspects 1-11, wherein sending the timing misalignment information comprises: sending the timing misalignment information on a periodic or semi-persistent uplink grant.

[0123] Aspect 13: A method according to any one of Aspects 1-12, wherein sending timing misalignment information comprises: sending the timing misalignment information at least partially based on an event, wherein the event comprises at least one of the following: an event defined by a specification, or a change between the timing misalignment information and previous timing misalignment information satisfies a threshold.

[0124] Aspect 14: A wireless communication method performed by a user equipment (UE), comprising: receiving an indication to send an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and sending the uncompensated uplink signal to the satellite based at least in part on the received indication, wherein the uncompensated uplink signal is not adjusted based at least in part on a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell.

[0125] Aspect 15: The method according to aspect 14, wherein receiving the indication comprises: receiving the indication in a physical downlink control channel (PDCCH) communication. Aspect 16: The method according to aspect 14 or 15, wherein sending the uncompensated uplink signal comprises: sending the uncompensated uplink signal as part of a random access channel (RACH) procedure.

[0126] Aspect 17: The method according to aspect 16, wherein the uncompensated uplink signal comprises a RACH preamble transmission on a physical random access channel (PRACH). Aspect 18: The method according to any one of aspects 14-18, wherein the UE and the satellite communicate using narrowband Internet of Things (NB-IoT) communication and / or enhanced mobile broadband (eMBB) communication.

[0127] Aspect 19: An apparatus for wireless communication at a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more aspects of aspects 1-13. Aspect 20: A wireless communication device, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more aspects of aspects 1-13. Aspect 21: An apparatus for wireless communication, comprising at least one component for performing the method of one or more aspects of aspects 1-13.

[0128] Aspect 22: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1-13. Aspect 23: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, when executed by one or more processors of a device, causes the device to perform the method of one or more aspects of aspects 1-13.

[0129] Aspect 24: An apparatus for wireless communication at a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more aspects of aspects 14-18. Aspect 25: A wireless communication device, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more aspects of aspects 14-18. Aspect 26: An apparatus for wireless communication, comprising at least one component for performing the method of one or more aspects of aspects 14-18.

[0130] Aspect 27: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 14-18. Aspect 28: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, when executed by one or more processors of a device, causes the device to perform the method of one or more aspects of aspects 14-18.

[0131] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the various aspects to the precise forms disclosed. Modifications and variations may be made based on the above disclosure, or may be acquired from the practice of various aspects.

[0132] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Software should be broadly interpreted as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes and / or functions, etc., whether or not referred to as software, firmware, middleware, microcode, hardware description language or other. As used herein, a processor is implemented with a combination of hardware and / or hardware and software. It is obvious that the system and / or method described herein can be implemented in different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not to limit various aspects. Therefore, the operation and behavior of the system and / or method are described herein without reference to a specific software code, and it is to be understood that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0133] As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0134] Even if a specific combination of features is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner that is not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below can only be directly attached to a claim, the disclosure of various aspects includes the combination of each dependent claim with each other claim in the claim set. As used herein, the phrase "at least one" in the list of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc, or any other arrangement of a, b and c).

[0135] None of the elements, actions or instructions used herein should be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "one" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more projects related to the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (for example, a combination of related projects, unrelated projects, related projects and unrelated projects), and can be used interchangeably with "one or more". In the case of only expecting a project, the phrase "only one" or similar language is used. In addition, as used herein, the terms "has", "have", "having" and the like are intended to be open terms. In addition, unless otherwise clearly stated, the phrase "based on" is intended to mean "based at least in part". In addition, as used herein, the term "or" is inclusive when used in a series, and can be used interchangeably with "and / or", unless otherwise clearly stated (for example, if used in combination with "any" or "only one").

Claims

1. A user equipment UE, comprising: Transceiver; at least one memory including instructions; as well as One or more processors configured to execute the instructions so that the UE: determining a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; as well as Information related to the timing misalignment is sent via the transceiver to a network entity associated with the non-terrestrial cell through a medium access control MAC control element MAC-CE.

2. The UE according to claim 1, wherein: The information related to the timing misalignment includes at least one of the following: an indication of said timing misalignment, or An indication of the geographic location of the UE.

3. The UE according to claim 1, wherein: The information relating to the timing misalignment comprises an indication of the timing misalignment; and Wherein the information related to the timing misalignment comprises an indication of an offset between the uplink timeline and the downlink timeline.

4. The UE according to claim 3, wherein: The offset is indicated as at least one of: the number of time slots between the uplink timeline and the downlink timeline, the number of subframes between the uplink timeline and the downlink timeline, the number of radio frames between the uplink timeline and the downlink timeline, or The amount of time between the uplink timeline and the downlink timeline.

5. The UE of claim 3, wherein the indication of the offset identifies the offset from a plurality of candidate offsets configured for the UE.

6. The UE of claim 5, wherein the one or more processors are further configured to: determining an offset of the measurement; and A candidate offset among a plurality of candidate offsets that is closest to the measured offset is selected as the offset of the timing misalignment.

7. The UE according to claim 3, wherein the offset is indicated as a duration range or a time domain resource range.

8. The UE of claim 1, wherein the one or more processors are further configured to: identifying a conflict between reception of an uplink transmission and a downlink transmission including information related to the timing misalignment; and A determination to transmit information related to the timing misalignment is based at least in part on a priority associated with the uplink transmission being greater than a priority associated with the downlink transmission.

9. The UE of claim 1, wherein the one or more processors are further configured to: determining an updated timing misalignment between the uplink timeline and the downlink timeline associated with the network entity; and Information regarding the updated timing misalignment is sent via the transceiver to the network entity.

10. The UE of claim 1 , wherein the one or more processors for sending information related to the timing misalignment are configured to: Information related to the timing misalignment is sent via the transceiver on a periodic or semi-persistent uplink grant.

11. The UE of claim 1 , wherein the one or more processors for sending information related to the timing misalignment are configured to: transmitting, via the transceiver, information related to the timing misalignment based at least in part on an event, The event includes at least one of the following: Events defined by the specification, or An amount of change between the information related to the timing misalignment and previous information related to the timing misalignment satisfies a threshold.

12. A user equipment UE, comprising: Transceiver; at least one memory; as well as One or more processors configured to: receiving, via the transceiver, an indication to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; and transmitting, via the transceiver, the uncompensated uplink signal to the satellite based at least in part on receiving the indication, Wherein the uncompensated uplink signal is used for measurement of a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell at the satellite.

13. The UE of claim 12, wherein the one or more processors for receiving the indication are configured to: The indication is received in a Physical Downlink Control Channel (PDCCH) communication.

14. The UE of claim 12, wherein the one or more processors for sending the uncompensated uplink signal are configured to: The uncompensated uplink signal is sent as part of a random access channel, RACH, procedure.

15. The UE of claim 14, wherein the uncompensated uplink signal comprises a RACH preamble on a physical random access channel (PRACH).

16. A method of wireless communication performed at a user equipment (UE), comprising: determining a timing misalignment between an uplink timeline and a downlink timeline associated with a non-terrestrial cell; as well as Information related to the timing misalignment is sent to a network entity associated with the non-terrestrial cell via a medium access control MAC control element MAC-CE.

17. The method according to claim 16, wherein: The information related to the timing misalignment includes at least one of the following: an indication of said timing misalignment, or An indication of the geographic location of the UE.

18. The method according to claim 16, wherein: The information relating to the timing misalignment comprises an indication of the timing misalignment; and Wherein the information related to the timing misalignment comprises an indication of an offset between the uplink timeline and the downlink timeline.

19. The method according to claim 18, wherein: The offset is indicated as at least one of: the number of time slots between the uplink timeline and the downlink timeline, the number of subframes between the uplink timeline and the downlink timeline, the number of radio frames between the uplink timeline and the downlink timeline, or The amount of time between the uplink timeline and the downlink timeline.

20. The method of claim 18, wherein the indication of the offset identifies the offset from a plurality of candidate offsets configured for the UE.

21. The method according to claim 20, further comprising: Determine the offset of the measurement; as well as A candidate offset among a plurality of candidate offsets that is closest to the measured offset is selected as the offset of the timing misalignment.

22. The method of claim 18, wherein the offset is indicated as a duration range or a time domain resource range.

23. The method of claim 16, further comprising: identifying a conflict between reception of an uplink transmission and a downlink transmission including information related to the timing misalignment; as well as A determination to transmit information related to the timing misalignment is based at least in part on a priority associated with the uplink transmission being greater than a priority associated with the downlink transmission.

24. The method of claim 16, further comprising: determining an updated timing misalignment between the uplink timeline and the downlink timeline associated with the network entity; as well as Information regarding the updated timing misalignment is sent to the network entity.

25. The method of claim 16, wherein: The sending of information related to the timing misalignment includes: The timing misalignment information is sent on a periodic or semi-persistent uplink grant.

26. The method of claim 16, wherein: The sending of information related to the timing misalignment includes: transmitting information related to the timing misalignment based at least in part on an event, The event includes at least one of the following: Events defined by the specification, or An amount of change between the information related to the timing misalignment and previous information related to the timing misalignment satisfies a threshold.

27. A method of wireless communication performed by a user equipment UE, comprising: receiving an indication to transmit an uncompensated uplink signal to a satellite associated with a non-terrestrial cell; as well as transmitting the uncompensated uplink signal to the satellite based at least in part on receiving the indication, Wherein the uncompensated uplink signal is used for measurement of a timing misalignment between an uplink timeline and a downlink timeline associated with the non-terrestrial cell at the satellite.

28. The method according to claim 27, wherein: Receiving the indication includes: The indication is received in a Physical Downlink Control Channel (PDCCH) communication.

29. The method according to claim 27, wherein: Sending the uncompensated uplink signal comprises: The uncompensated uplink signal is sent as part of a random access channel, RACH, procedure.

30. The method of claim 29, wherein the uncompensated uplink signal comprises a RACH preamble on a physical random access channel (PRACH).

31. A user equipment (UE), comprising components for performing the method according to any one of claims 16-30.

32. A computer readable medium having program code recorded thereon, wherein: The program code may be executed by one or more processors of a user equipment UE, so that the UE performs the method according to any one of claims 16-30.

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